Custom Steam Distribution Coils

Custom Steam Distribution Coils

Overview

DO Model – Distributing Steam Coils with Same End Connections

Like the other steam coils, Distributing steam heating coils are used in a variety of industrial ventilation and process drying applications across almost every industry. As a general rule, coils in this series are selected when the incoming air temperatures are below freezing and/or the steam supply is modulated for temperature control. The Distributing Steam coil is often referred to as a ‘no-freeze’ coil. The design features an inner tube, inside the primary tube, that serves two purposes. First, it distributes the steam to the far end of the primary tube where the steam returns and/or condenses in the annular area between the tubes. The second features is that the warm inner tube acts as a heat-trace to keep the condensate in the primary (outer) tube from freezing.

Distributing Steam Coil Applications

Advanced Coil manufactures distributing steam coils for a variety of applications including:

  • Grain/seed processing facilities and equipment
  • Pulp/paper processing facilities and equipment
  • Dairy processing facilities and equipment
  • Food processing facilities and equipment
  • Power plants
  • Heat recovery systems
  • Petroleum/chemical plants
  • Textile factories

Type DO coils are available as both one-row and two-row deep coils with the steam feed connection and the condensate return connection on opposite ends of the coil.  

Specifications

Specifications – Steam Coils

Advanced Coil offers a variety of tube and fin configurations which will accommodate virtually any application, regardless of the operating temperatures, pressures or environmental conditions. If the material that you need for a specific project is not listed below please contact us to discuss your needs.  We have experience using a variety of other materials.

Fins

Fin Spacing
  • 2.5 FPI (fins per Inch) to 11 FPI spacing
Aluminum
  • 0.025” thick half-hard tempered
  • 0.016” thick half-hard tempered
Stainless Steel
  • 0.010” thick 304LSS
  • 0.010” thick 316LSS
Steel
  • 0.010” thick
Copper
  • 0.016” thick half-hard tempered
  • 0.025” thick half-hard tempered
Spiral Fins
  • Embedded, spiral wound, brazed or welded finned tubes are available upon request

Tubes

Steel
  • 0.109” wall (12 gauge) ASTM A214 Welded Steel (S09)
  • 0.109” wall (12 gauge) ASTM A179 Seamless Steel (S09)
Stainless Steel
  • 0.049” wall (18 gauge) ASTM A249 Welded 304LSS (449)
  • 0.083” wall (14 gauge) ASTM A249 Welded 304LSS (483)
  • 0.049” wall (18 gauge) ASTM A249 Welded 316LSS (649)
  • 0.083” wall (14 gauge) ASTM A249 Welded 316LSS (683)
  • 0.049” wall (18 gauge) ASTM A213 Seamless 304LSS (449)
  • 0.083” wall (14 gauge) ASTM A213 Seamless 304LSS (483)
  • 0.049” wall (18 gauge) ASTM A213 Seamless 316LSS (649)
  • 0.083” wall (14 gauge) ASTM A213 Seamless 316LSS (683)

Casings

Types
  • Standard
  • Standard Pitched
  • Baffled
  • Baffled Pitched
  • Air Tight
  • Air Tight Pitched
  • Slide Out
  • Slide Out Pitched
 Materials
  • Galvanized Steel  16 ga. To 7 ga.
  • 304 Stainless Steel  16 ga. To ¼” thick
  • 316 Stainless Steel  16 ga. To ¼” thick
  • Aluminum  0.060” to ¼” thick

Typical Application Reference Chart

Typical Application
Tube Material
Tube Designation
Header Material
Typical Design Pressure @ Temperature*
High pressure, non-corrosive steam 0.109” wall (12 ga.) Steel S09 Welded
309 Seamless
Sch 40 Carbon Steel 250 PSIG @ 450°F
Corrosive steam or corrosive atmosphere 0.049” wall (18 ga.) 304LSS 449 Welded
549 Seamless
Sch 40 304LSS 250 PSIG @ 450°F
Corrosive steam or corrosive atmosphere 0.049” wall (18 ga.) 316LSS649 Welded
749 Seamless
Sch 40 316LSS 250 PSIG @ 450°F
High-pressure, corrosive steam or corrosive atmosphere 0.083” wall (14 ga.) 304LSS 483 Welded
583 Seamless
Sch 40 304LSS 250 PSIG @ 450°F
High-pressure, corrosive steam or corrosive atmosphere 0.083” wall (14 ga.) 316LSS 683 Welded
783 Seamless
Sch 40 316LSS 250 PSIG @ 450°F
*Higher pressures and/or temperatures are available to meet the specific project requirements  

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